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(No Model.)

O. B. SHALLENBERGER.

ARMATURE EUR DYNAMO ELECTRIC MACHINES. No. 397,392. Patente-d Feb. 5 1889.

WITNESSES:

Awys,

UNITED STATES PATENT OEErcE.

OLIVER B. SHALLENBERGER, OF ROCHESTER, ASSIGNOR TO THE lVESTING- HOUSE ELECTRIC COMPANY, OF PITTSBURG, PENNSYLYANIA.

ARMATURE FOR DYNAlVlO-ELECTRIC MACHlNES.

SPECIFICATION forming parl; of Letters Patent No. 397,392, dated February 5, 1889.

Application tiled October 1l, 1888 Serial No. 287,8!15 (No modelo T0 all whom t muy concern.-

Beitknown that I, OLIVER B. SrL-iLLEnnER- GER, a citizen of the United States, residing` in Rochester, in the county ot Beaver and State of Pennsylvaniadiave invented a certain new and useful Improvement in Armatures for Electric Machines, (Case No. 235,) ot which the following, is a speciication.

The invention relates to the construction ot armatures tor electric machines.

The object ot the invention is to provide a simple and convenient plan ot" winding two sets ot' coils upon an armature of the cylindrical type, so that each set ot coils will occupy its proper posit-ion relatively to the other and at the same time shall be thoroughly insulated therefrom.

This invention especially applicable to generators designed to deliver two alternatingl electric currents the phases ot' which are nonsynchronous.

The invention will be described in detail in connection with the accompanying` drawl ings, in which- Figure lis an end view of the armature, partly in section, and Fig'. 2 is a cross-section ot one end ot the armature.

Referring` to the drawings, A represents the core of the armature. This may be made ot' laminated sott iron or in any other convenient manner. a set ot coils, o of, the wires of which lie ried down upon the ends beneath overhanging clips h ZJ. These coils are located at equal distances around the circumference of the core and are designed to be connected with each other and with suitable commutators or collecting-rings, in a manner well understood.

applied, a plate, l, which may be et' metalsuch as brass-or, it desired, of .insulating material, is secured to each end ot the armature, coveringl the clips and the wire wound Upon this core there is wound i Atter the First set of coils has been l upon the ends. il second set ol. overhanging` clips, Ui b2, is secured to each end ot` the end plates, B, and the second set ot coils c? is wound upon the `face of the armature in the spaces lett vacant by the first set and down the outer surfaces ot' the end plates beneath the overhang-ing clips h2. The clips lf3 are so located with reference to the clips h to bring the second set ot" coils fr? in the proper position with reference to the coils o" to secure the required diti'erence ot' phase in the currents delivered by the two sets ot coils. The plate 13 et'tfectively separates the portions of the two sets o coils upon the ends ot the armature.

I claim as my inventionl. The combination ot an armature-core, two sets ot' winding-clips for receiving the two sets of coils, one set ot' clips being secured to the body of the armature, and a plate at each end of the armature to which the other sets ot' winding-clips are secured.

2. In an armature Vtor electric machines, a

, cylindrical core of sott iron, a set of armature-coils wound along' the face and down upon the ends of the core, overhanging` clips t'or retainingl the coils in. position secured to the ends ot the armature, plates covering' the clips and the wire upon the ends of the armature, a second set of armature-coils wound upon the face ot the armature in the spaces lett vacant by the first set, and down along' the surface ot the cylinder and are carupon the outer su riaces ot' the respective insulating-plates, and winding-clips secured to the respective plates for retaining the second set ot coils in position.

In testimony whereotI I have hereunto subscribed my name this 2d day of October, I). i888.

OLIVER B.

Sl'li-lLL-EBERGER. 

